Bought this with the primary intent of busking (Acoustic guitar + Voice) + as a speaker for e-drums and bit of outside party for kids.
For the busking setup i tested in a 10x6m room, Cheap Bayern Dynamic v35d s mic, Dovina Acoustic guitar plugged directly to speaker.
So far i can say that I'm nothing less but impressed.
Voice is clear - i adjust the bass/hi on the speaker to adjust voice eq, then adjust the eq on my guitar to match what i need on the guitar side. The high speaker (tweeter) is not the horn type so it sounds more natural and does not hurt the ears in the upper frequencies.
Volume is good enough for small venues + bit outside (tested on 50% battery), bit better with AC power (bass). But nothing that will punch your guts when on max volume. Better than what i expected for 40W.
I did not expect the AUX to be working when bluetooth is connected (that's a plus).
So in theory you can have 1xMic, 1xGuitar,1x Bluetooth/Phone backtrack + 1x Aux for whatever you need (e.g. kyes, electric drums or external mix with plenty of other inputs) - the AUX and Bluetooth volume knob is shared so you need to adjust on ext device or phone for different volumes (which is still manageable)
Bluetooth range is what you can expect for 10m better quality BT device. Sound drops off at aprox. the same place as my Sennheiser HD4.40 headphones which have great range.
The speaker is lightweight and compact. Wheels have ball bearings.
The handle is a bit flimsy tho and the mic is very cheap, with a lot of handling noise (this was expected, it is still usable for spoken word/presentation). I can also see that the knobs could be shorter so they won't get damaged during transport (i can swap those easily). The pots underneath are plastic (maybe a future fix/update)
I can't comment of the battery life so far (too early to tell). You can run the speaker from AC and charge at the same time. Charges when off and plugged in the wall.
Overall 9.5/10 - amazing for the price and far - far better than i expected